Major Proterozoic basement features of the eastern midcontinent of North America revealed by recent COCORP profiling

@inproceedings{Pratt1989MajorPB,
  title={Major Proterozoic basement features of the eastern midcontinent of North America revealed by recent COCORP profiling},
  author={Thomas L. Pratt and R. C. Culotta and Ernest C. Hauser and Douglas D. Nelson and Larry D. Brown and Sidney Kaufman and Jack Oliver and William J. Hinze},
  year={1989}
}
COCORP profiling in the eastern midcontinent of North America has (1) traced an extensive sequence of Precambrian layered rocks beneath southern Illinois, Indiana, and western Ohio; (2) detected a broad zone of east-dipping basement reflectors associated with the Grenville front beneath western Ohio; and (3) discovered a wide region of west -dipping reflectors penetrating most of the crust beneath eastern Ohio. The Precambrian layered assemblage may be as much as 11 km thick beneath southern… CONTINUE READING

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